Home / 145,164,078.40-217,746,117.60-128,157,966.40

Finding the Fourth Proportional to 145,164,078.40, 217,746,117.60 and 128,157,966.40

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Solution

The fourth proportional to 145,164,078.40, 217,746,117.60 and 128,157,966.40 is: 192,236,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,164,078.40 : 217,746,117.60 = 128,157,966.40 : x
  2. Step 2: Convert to fraction form
    145,164,078.40/217,746,117.60 = 128,157,966.40/x
  3. Step 3: Cross multiply
    145,164,078.40x = 217,746,117.60 × 128,157,966.40
  4. Step 4: Simplify right side
    145,164,078.40x = 27,905,899,623,111,248
  5. Step 5: Solve for x
    x = 27,905,899,623,111,248/145,164,078.40
  6. Step 6: Final answer
    x = 192,236,949.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.