Home / 125,319,878.20-172,941,929.58-70,312,143.16

Finding the Fourth Proportional to 125,319,878.20, 172,941,929.58 and 70,312,143.16

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Solution

The fourth proportional to 125,319,878.20, 172,941,929.58 and 70,312,143.16 is: 97,031,036.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,319,878.20 : 172,941,929.58 = 70,312,143.16 : x
  2. Step 2: Convert to fraction form
    125,319,878.20/172,941,929.58 = 70,312,143.16/x
  3. Step 3: Cross multiply
    125,319,878.20x = 172,941,929.58 × 70,312,143.16
  4. Step 4: Simplify right side
    125,319,878.20x = 12,159,917,710,995,598
  5. Step 5: Solve for x
    x = 12,159,917,710,995,598/125,319,878.20
  6. Step 6: Final answer
    x = 97,031,036.78

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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.