Home / 153,948,636-212,447,425.20-83,382,490.77

Finding the Fourth Proportional to 153,948,636, 212,447,425.20 and 83,382,490.77

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Solution

The fourth proportional to 153,948,636, 212,447,425.20 and 83,382,490.77 is: 115,066,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,948,636 : 212,447,425.20 = 83,382,490.77 : x
  2. Step 2: Convert to fraction form
    153,948,636/212,447,425.20 = 83,382,490.77/x
  3. Step 3: Cross multiply
    153,948,636x = 212,447,425.20 × 83,382,490.77
  4. Step 4: Simplify right side
    153,948,636x = 17,714,395,470,849,264
  5. Step 5: Solve for x
    x = 17,714,395,470,849,264/153,948,636
  6. Step 6: Final answer
    x = 115,066,920.57

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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.