Home / 153,730.64-212,158.04-86,666.96

Finding the Fourth Proportional to 153,730.64, 212,158.04 and 86,666.96

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Solution

The fourth proportional to 153,730.64, 212,158.04 and 86,666.96 is: 119,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,730.64 : 212,158.04 = 86,666.96 : x
  2. Step 2: Convert to fraction form
    153,730.64/212,158.04 = 86,666.96/x
  3. Step 3: Cross multiply
    153,730.64x = 212,158.04 × 86,666.96
  4. Step 4: Simplify right side
    153,730.64x = 18,387,092,366.36
  5. Step 5: Solve for x
    x = 18,387,092,366.36/153,730.64
  6. Step 6: Final answer
    x = 119,605.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.