Home / 128,680,206.40-193,048,303.20-42,403,931.20

Finding the Fourth Proportional to 128,680,206.40, 193,048,303.20 and 42,403,931.20

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Solution

The fourth proportional to 128,680,206.40, 193,048,303.20 and 42,403,931.20 is: 63,615,121.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,680,206.40 : 193,048,303.20 = 42,403,931.20 : x
  2. Step 2: Convert to fraction form
    128,680,206.40/193,048,303.20 = 42,403,931.20/x
  3. Step 3: Cross multiply
    128,680,206.40x = 193,048,303.20 × 42,403,931.20
  4. Step 4: Simplify right side
    128,680,206.40x = 8,186,006,967,169,540
  5. Step 5: Solve for x
    x = 8,186,006,967,169,540/128,680,206.40
  6. Step 6: Final answer
    x = 63,615,121.52

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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.