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Finding the Fourth Proportional to 152,510.80, 228,875.55 and 85,880.20

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Solution

The fourth proportional to 152,510.80, 228,875.55 and 85,880.20 is: 128,881.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,510.80 : 228,875.55 = 85,880.20 : x
  2. Step 2: Convert to fraction form
    152,510.80/228,875.55 = 85,880.20/x
  3. Step 3: Cross multiply
    152,510.80x = 228,875.55 × 85,880.20
  4. Step 4: Simplify right side
    152,510.80x = 19,655,878,009.11
  5. Step 5: Solve for x
    x = 19,655,878,009.11/152,510.80
  6. Step 6: Final answer
    x = 128,881.88

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1.5x scale

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.